Itoero
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On 20/10/2018 at 8:56 PM, Strange said:
It is complicated because quantum theory is probabilistic. This means you can't say what specific path a particular photon follows or which atoms it interacts with. (Which is why it easier to think about this classically.) So to work out what happens you have to consider every possible path a photon could take - every atom it could interact with, and every angle it could be re-emitted - you then find that all these different paths interfere either constructively or destructively, giving you the most probable outcomes. It turns out that the most probable outcome corresponds to the classical wave description. (Feynman did some excellent lectures to a lay audience on QED, the theory that explains all this.)
Thanks for that explanation.
On 20/10/2018 at 8:56 PM, Strange said:Your "causes light propagation" is the wrong way round, I think. The light propagates normally, in between the interactions with the atoms. There is a lot of space between the water molecules where the light/photons propagate normally, with only occasional interactions.
According to what I read hydrogen bonds in water (which cause the cohesion) are about 0,197 nm to 0,3 nm. And a watermolecule's diameter is about 0,275 nm. Isn't this a small 'intermoleular' distance compared to the size of the molecule? IIs the size of the nuclei related to the diameter?
On 20/10/2018 at 8:56 PM, Strange said:Yes. Classically because the refractive increases with pressure (because the density increases). From the photon point of view because the molecules are closer together so the interactions are more frequent.
The reason light can't reach the ocean bottom is often said to be due the interaction of photons with opaque particles. But since intermolecular distance (hydrogen bonds)keeps growing smaller, shouldn't light in theory reach the oceaan bottom yet there is not enough to observe/measure it?
Since the distance between watermolecules grows smaller you need more and more power to shine light through water. This causes a 'limit' related to the depth of the oceans where Bioluminescence is still possible/doable/lucrative.
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General relativity and quantum mechanics.
52 minutes ago, StringJunky said:When did you transmogrify from neophyte to know all?
When I was neophyte, I was a wannabe know all.
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So you refuse to spend 10 minutes on a video that might debunk your belief system?
You do know that the holographic principle combines the two?
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Maybe it's related to the foodsource.
Something else from the wikipedia: The smallest cheetahs have been reported from the Sahara, northeastern Africa and Iran.
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Humans are just one of the countless lifeforms on earth. If we have afterlife then an oak tree and a mosquito also have afterlife?
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21 hours ago, Gees said:
I do wonder how you decided that the interaction, praying, serving, and/or talking to "God", is what causes human properties in "God". My thought is that these properties are caused by the unconscious aspect of mind as I explained earlier in this thread.
Gee
I rather mean if you think you have a form of interaction with God then you will ascribe human properties to God because you interact with 'him'. I don't really know how to explain this. When you for example pray to ask help, say thanks or simply as a ritual then imo you will ascribe human properties to god because it's more suitable to ask help or say thanks to a person.
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21 hours ago, Strange said:
In what sense? It works as in any other medium: the light occasionally interacts with the molecules on the way through.
How is that possible? Water exists mainly our of H20 molecules. Photons can't travel through H2O-molecules without interacting with them. Light is propagated in water via absorbing and reemitting of photons. 'The fact' that absorbing/reemitting of photons doesn't go instantaneously is why the speed of light in water is slower then c. A medium like water is really a collection of a huge number of tiny electrons and protons/neutrons.
I asked this because I wonder how the absorbing/reemitting works.(which causes light propagation)
And I'm wondering if the speed of light slows down, if you go deeper in an ocean.
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How does light propagation in water works?
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5 hours ago, Strange said:
So you think the Gospels are “Merely corroborative detail, intended to give artistic verisimilitude to an otherwise bald and unconvincing narrative” as WS Gilbert put it.
Not really.The Gospels don't make an narrative more convincing. They basically create the narrative. The nativity of Jesus in Bethlehem and Jesus living in Nazareth are only told in the Gospels.
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The strange thing...many people believe in Jesus' existence because the stories of Jesus are written in great detail...….this is the main reason the stories are made up.
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On 13/10/2018 at 1:36 PM, swansont said:
You asked about the difference between evidence and proof in the context of science, so this would seem to be just a semantic argument that you didn't use that specific phrasing, and yet it's precisely what was implied.
You are wrong. Evidence and proof used in science are not necessary 'scientific'. The meaning of evidence and proof changes depending on the context the words are used in.
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16 minutes ago, swansont said:2 hours ago, Itoero said:
I don't know what happens in the video. All there is is your assessment as shocking. No, that's not enough.
I see, then move this to the trash can
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Isn't this enough text?
"The baptism in Georgia is shocking.
What's wrong with those people?"
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On 10/10/2018 at 10:32 PM, Johnnywong said:
1. What is the probability of formation of DNA from atoms random collisions ?
The origin of DNA via natural means is not proven but it's very well understood. The collisions of atoms you can call 'random'...but the molecules that survive are not random.
Have a look at this paper: https://www.ncbi.nlm.nih.gov/books/NBK6360/
On 10/10/2018 at 10:32 PM, Johnnywong said:. Why there is no fossil records of the intermediate forms as suggested in evolution?
There is a massive amount. They are called 'transitional fossils'. https://en.wikipedia.org/wiki/List_of_transitional_fossils
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The baptism in Georgia is shocking.
What's wrong with those people?
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On 29/09/2018 at 10:46 PM, Strange said:
Quantum field theory is based on special relativity (which is what swansont was referring to).
But, yeah, you understand it perfectly.
On 29/09/2018 at 11:01 PM, swansont said:QM and general relativity have issues, at the scale where the classical theory fails (similarly, classical mechanics fails and QM is needed under certain conditions) As Strange has noted, special relativity and QM have been successfully combined.
Quantum field theory is a theoretical frame work...
Uncertainty is a main concept in QM, Einstein tried to debunk H U. The absence of hidden variables(bell's theorem) is also a main concept in QM. Einstein created a hidden variable theory but did not publish it. Relativity is created from a completely different point of view then QT.
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Most theists think they have some form of interaction (by praying, serving, talking with God in dream or hallucinations) with their god, which causes people to ascribe human properties to their God concept...the same for people that belief in heaven/hell.
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the Grizzly–polar bear hybrid is called Grolar bear (or Prizzly bear)and it occurs in the wild. It's an intermediate between Polar bears and Grizzly bears.https://en.wikipedia.org/wiki/Grizzly–polar_bear_hybrid#Characteristics
If Polar bears are bred with larger brown bears like Kamchatka brown bear or Kodiak brown bears, I can imagine that would be the strongest land dwelling animal of prey.
This is about Ursid hybrids.https://en.wikipedia.org/wiki/Ursid_hybrid
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2 hours ago, mistermack said:
Interestingly, I've read accounts that say that Polar Bears normally give way to Brown Bears in a confrontation, the Brown Bears appear more aggressive.
I heard the same thing about the aggressiveness. But I think that depends on their diet. Many bears (in South-Alaska),British-Columbia and in East-Russia(Kamchatka ) gain most fat in the summer due to the salmon(or other fish) run or are adapted to eat sea food...while more continental bears are more omnivorous and eat whatever is present. In general, the more fatty food a bear has, the bigger his size but the lower his aggressiveness. They have for example noted that bears in Kamchatka are less aggressive then bears in Siberia.
The biggest bear in Eurasia is probably the Kamchatka brown bear, he is slightly smaller then the Kodiak bear but the breadth of the skull is much greater.https://en.wikipedia.org/wiki/Kamchatka_brown_bear
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30 minutes ago, mistermack said:
The Polar Bear is the strongest, possibly matched by the Kodiak Brown Bears.
I think Polar bears are on average stronger then Brown Bears. They are nearly 100% carnivorous and hunt mostly for seals or other marine mammals. But they can also hunt for fsh.
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Maybe a male moose?
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On 21/09/2018 at 10:01 AM, Eise said:
think you should be more specific on this 'somehow'... And mostly theories are rejected, because they cannot explain certain observations. But all this scratches just the surface. Already read the philosophy of science of Imre Lakatos?
I don't mean that this is for all models. When for example the holographic is 'proven' then other models are not disproven but lose their scientific value.
On 21/09/2018 at 10:01 AM, Eise said:None of them is a hint that the authors mean 'scientific proof'.
That's your interpretation and you should read the OP again. I did not use the term 'scientific proof'.
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If you mean 'Hindi': सनातन धर्म
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Cosmological redshift
in Astronomy and Cosmology
Posted
What causes cosmological redshift?
Can it be due to gravitation? (gravitational redshift)